Miguel Carreño;Jie Song;Oriol Gomis-Bellmunt;Robert Griñó
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Abstract
The Synchronous Reference Frame Phase-Locked Loop is a central component of grid-following Voltage Source Converters. Previous research has shown that the differential equation introduced by this loop is a swing equation, similar to that of the synchronous machine. This paper analyzes the large-signal stability of a single converter connected to an infinite-bus system. The outcome is a boundary in the plane of the parameters separating a region of insufficient damping and a region of sufficient damping. Moreover, the boundaries of stability from the small-signal analysis are also included for completeness. The findings are validated via time-domain simulation in EMT models.
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